def handle_swapcfg(swapcfg):
"""handle the swap config, calling setup_swap if necessary.
return None or (filename, size)
"""
if not isinstance(swapcfg, dict):
LOG.warning("input for swap config was not a dict.")
return None
fname = swapcfg.get("filename", "/swap.img")
size = swapcfg.get("size", 0)
maxsize = swapcfg.get("maxsize", None)
if not (size and fname):
LOG.debug("no need to setup swap")
return
if os.path.exists(fname):
if not os.path.exists("/proc/swaps"):
LOG.debug(
"swap file %s exists, but no /proc/swaps exists, being safe",
fname,
)
return fname
try:
for line in util.load_file("/proc/swaps").splitlines():
if line.startswith(fname + " "):
LOG.debug("swap file %s already in use", fname)
return fname
LOG.debug("swap file %s exists, but not in /proc/swaps", fname)
except Exception:
LOG.warning("swap file %s exists. Error reading /proc/swaps",
fname)
return fname
try:
if isinstance(size, str) and size != "auto":
size = util.human2bytes(size)
if isinstance(maxsize, str):
maxsize = util.human2bytes(maxsize)
return setup_swapfile(fname=fname, size=size, maxsize=maxsize)
except Exception as e:
LOG.warning("failed to setup swap: %s", e)
return None
def handle_swapcfg(swapcfg):
"""handle the swap config, calling setup_swap if necessary.
return None or (filename, size)
"""
if not isinstance(swapcfg, dict):
LOG.warning("input for swap config was not a dict.")
return None
fname = swapcfg.get('filename', '/swap.img')
size = swapcfg.get('size', 0)
maxsize = swapcfg.get('maxsize', None)
if not (size and fname):
LOG.debug("no need to setup swap")
return
if os.path.exists(fname):
if not os.path.exists("/proc/swaps"):
LOG.debug("swap file %s exists, but no /proc/swaps exists, "
"being safe", fname)
return fname
try:
for line in util.load_file("/proc/swaps").splitlines():
if line.startswith(fname + " "):
LOG.debug("swap file %s already in use", fname)
return fname
LOG.debug("swap file %s exists, but not in /proc/swaps", fname)
except Exception:
LOG.warning("swap file %s exists. Error reading /proc/swaps",
fname)
return fname
try:
if isinstance(size, str) and size != "auto":
size = util.human2bytes(size)
if isinstance(maxsize, str):
maxsize = util.human2bytes(maxsize)
return setup_swapfile(fname=fname, size=size, maxsize=maxsize)
except Exception as e:
LOG.warning("failed to setup swap: %s", e)
return None
